Around -5F here. Moisture crystalizing out of the air.

A fine morning for a ride.
I went with a balaclava and ski goggles today. Got a tad overheated climbing the hill to my office building, but was otherwise comfortable. Long-sleeve cotton (I know, I know - I don't perspire much) shirt and nylon cycling jacket. Polar fleece on the legs. Gloves.
I saw a loon and some ducks swimming in the lake. The ducks had their feathers all puffed out against the cold.
I also saw some VERY strange tracks in the snow. Nothing I've seen before. Little feet with a well-defined line down the middle. Opossum?
Co-Worker, jokingly: "You got studs on those tires?"
Me: "Yes I do."
Co-Worker: "You do?"
Me: "Yep."
Co-Worker: "Nooo. Where?"
I point out the studs.
Co-Worker: "Wow!"